package test.studet_manager;
public class Student {
static int num = 100;
// 编号-->唯一的
private int number = -1;
//姓名
private String name = "";
//性别
private String sex = "";
//年龄
private int age = -1;
//班级
private String grade = "";
//成绩
private int score = -1;
/*
* set和 get的方法
*/
public void setSex(String sex) {
this.sex = sex;
}
public String getSex() {
return sex;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setAge(int age) {
// 年龄必须大于零
if (age>=0) {
this.age = age;
}
}
public int getAge() {
return age;
}
public void setGrade(String grade) {
this.grade = grade;
}
public String getGrade() {
return grade;
}
public void setScore(int score) {
if (score >= 0) {
this.score = score;
}
}
public int getScore() {
return score;
}
public void setNumber(int number) {
this.number =this.number+0;
}
public int getNumber(){
return number;
}
public Student() {
// TODO Auto-generated constructor stub
++num;
this.number = num;
}
public Student(int number,String name,String sex,int age,String grade,int score) {
getNumber();
getName();
getSex();
getAge();
getGrade();
getScore();
}
@Override
public String toString() {
// TODO Auto-generated method stub
return ""+this.number+" "+this.name+" "+this.sex+" "+this.age+" "+this.grade+" "+this.score+"\n";
}
@Override
public boolean equals(Object obj) {
// TODO Auto-generated method stub
// 判断要比较的对象是不是null
if (obj == null) {
return false;
}
//判断要比较的对象是不是自己本身
if (obj == this) {
return true;
}
// 判断要比较的对象是不是同一类型
if (obj instanceof Student) {
Student student = (Student)obj;
return student.number==this.number&&student.name==this.name&&student.sex==this.sex&&student.age==this.age&&student.grade==this.grade&&student.score==this.score;
}
return false;
}
@Override
// 注意：hashCode方法与equals方法中的属性必须一致
public int hashCode() {
// TODO Auto-generated method stub
return this.number-this.name.hashCode()-this.sex.hashCode()-this.age-this.grade.hashCode();
}
// 写一些自身的方法
public void learn() {
System.out.println(this.name+"在学习计算机语言");
}
}